[squid-users] Problems with wpad in Squid3

[Ralf Hildebrandt]

* Marcio Demetrio Bacci <marciobacci at gmail.com>:
> Hi,
> 
> I'm having the following problem with my squid3:
> 
> When I set the browser: "Auto-Detect proxy settings for this network" does
> not work.

WHICH browser? Not every browser can read the DHCP option 252.

The proxy autoconfig file neeeds to be served when accessing
http://wpad/wpad.dat
 
ALso, try specifying the proxy autoconfig URL: http://wpad/wpad.dat to
check if it's working at all.

> When we report: "Manual proxy configuration" works.

So it's not a squid problem :)
 
> Follow my configuration files:
> 
> */var/www/wpad.dat*
> function FindProxyForURL(url, host) {
>     if (shExpMatch(url,"*.empresa.com/*"))
>         {
>             return "DIRECT";
>         }
>     if (isInNet(host, "192.168.0.0","255.255.252.0"))
>         {
>             return "DIRECT";
>         }
>     return "PROXY 192.168.0.69:3128";
> }
> 
> 
> */etc/dhcp/dhcpd.conf*
> ddns-update-style none;
> default-lease-time 600;
> max-lease-time 7200;
> authoritative;
> option wpad-url code 252 = text;
> ddns-domainname "cmb.empresa.com.";
> option domain-name "cmb.empresa.com.";
> 
> 
> subnet 192.168.0.0 netmask 255.255.252.0 {
>   range 192.168.1.1 19.168.3.253;
>   option routers 192.168.0.1;
>   option domain-name-servers 192.168.0.25,192.168.0.10;
>   option broadcast-address 192.168.3.255;
>   option wpad-url "http://192.168.0.69/wpad.dat\n";

The URL for WPAD is http://wpad/wpad.dat

> proxy        IN    A    192.168.0.69
> wpad        IN    CNAME    proxy

OK. 
 
> Is there any tool to test my proxy ?

First you should test http://wpad/wpad.dat to see if the file returned
looks OK and has the correct content-type.

  Content-Type: application/x-ns-proxy-autoconfig

> Do I need to set any library in apache2 ?

No. 
  
-- 
Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
ralf.hildebrandt at charite.de        Campus Benjamin Franklin
http://www.charite.de              Hindenburgdamm 30, 12203 Berlin
Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155